I'm getting ClassNotFoundException on Class.forname("com.mysql.jdbc.Driver")
I'm using Windows Vista 64-bit, Eclipse Galileo, GWT framework. I downloaded mysql-connector-java-5.1.6-bin, but what is the exact path I should put this file in? I'm getting this exception while I'm in gwt-projects, but in normal projects it works good. Any idea how that should be done?
3 Answers
Finally its worked, the problem was not in the classpath, but from the .jar file itself, im using mysql-connector-java-5.1.6-bin which was not working, but when i tried mysql-connector-java-3.0.17-ga-bin everything works good, i hope to fix the new version soon anyway thanks BalusC for helping :)
1 Comment
Thorbjørn Ravn Andersen
make this a comment under your question, or edit your question. then upvote or select balusc as the answer
Just put the JAR file in the runtime classpath of the application in question.
In case of a Servlet based webapplication, you normally put it in /WEB-INF/lib folder. It's by default covered by the webapp's runtime classpath.
3 Comments
Mohd_Q
Im running this code in GWT server side, i added mysql-connector-java-5.1.6-bin to the /WEB-INF/lib for the project, i also restart my IDE but still not working
BalusC
Is it a
.zip file? The download is provided as a .zip. You'll need to extract the .zip and put the included .jar file in the classpath. Also read the instructions at the download page...Mohd_Q
no..its .jar file im sure from the path, but always give me the same exception, i really tried a lot of solutions..but nothing works, thats really weird
Disable Google App Engine. Its a setting in Eclipse.
Google App Engine doesn't allow you to open Sockets. When you try to load the JDBC driver, it makes a socket connection in a static block. An exception in the static block leads to a ClassNotFoundException, which is what you are seeing.
1 Comment
Mohd_Q
i was disabling it, but still not working until i change the version for the mysql-connector-java..thanks anyway
CLASSPATHenvironment variable is a bad idea. It's only useful for starters who expect some convenience when programming in CLI. It's never used in real world applications and it's also completely ignored by webapplications (with a good reason!).